def __init__(self, file, filename, match):
SimplifiedLoader.__init__(self, file, filename, match)
self.layout = None
self.format_version = atof(match.group('version'))
self.trafo = Trafo(1.0, 0.0, 0.0, -1.0, 0.0, 800)
self.colors = std_colors + [StandardColors.black] * 512
self.depths = {} # map object ids to depth
self.guess_cont()
